918180001 has 2 divisors, whose sum is σ = 918180002. Its totient is φ = 918180000.

The previous prime is 918179939. The next prime is 918180017. The reversal of 918180001 is 100081819.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 886550625 + 31629376 = 29775^2 + 5624^2 .

It is a cyclic number.

It is not a de Polignac number, because 918180001 - 2¹⁵ = 918147233 is a prime.

It is not a weakly prime, because it can be changed into another prime (918180101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 459090000 + 459090001.

It is an arithmetic number, because the mean of its divisors is an integer number (459090001).

Almost surely, 2^918180001 is an apocalyptic number.

It is an amenable number.

918180001 is a deficient number, since it is larger than the sum of its proper divisors (1).

918180001 is an equidigital number, since it uses as much as digits as its factorization.

918180001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 28.

The square root of 918180001 is about 30301.4851286203. The cubic root of 918180001 is about 971.9470583848.

The spelling of 918180001 in words is "nine hundred eighteen million, one hundred eighty thousand, one".